Any small/standard shank, short or long action will work. Even if the donor has a magnum or 223 bolt head, you can swap to a .473 bolt head pretty easily and swap magazines if necessary. That said, a short action with a 308 bolt face would be "easiest".Originally Posted by Marine24
My first build was a 260 on a staggerfeed 110 long action that started life as a 270, and it worked great.
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